👉 Mismatched is a term used in computer science and programming to refer to an error or inconsistency between two or more variables, values or data structures. It occurs when one of the variables does not have the correct type or value for another variable that is expected to be equal. This can occur due to incorrect input, improper use of comparison operators, or unexpected errors in code execution. In programming terms, a mismatched variable could result in an error message stating "undefined reference" or "incompatible types